
Standard Query:
Source to Standard
WITH CTE_VOCAB_MAP AS (
SELECT c.concept_code AS SOURCE_CODE, c.concept_id AS SOURCE_CONCEPT_ID, c.concept_name AS
SOURCE_CODE_DESCRIPTION, c.vocabulary_id AS SOURCE_VOCABULARY_ID, c.domain_id AS
SOURCE_DOMAIN_ID, c.CONCEPT_CLASS_ID AS SOURCE_CONCEPT_CLASS_ID, c.VALID_START_DATE AS
SOURCE_VALID_START_DATE, c.VALID_END_DATE AS SOURCE_VALID_END_DATE, c.INVALID_REASON AS
SOURCE_INVALID_REASON,c1.concept_id AS TARGET_CONCEPT_ID, c1.concept_name AS
TARGET_CONCEPT_NAME, c1.VOCABULARY_ID AS TARGET_VOCABUALRY_ID, c1.domain_id AS
TARGET_DOMAIN_ID, c1.concept_class_id AS TARGET_CONCEPT_CLASS_ID, c1.INVALID_REASON AS
TARGET_INVALID_REASON, c1.standard_concept AS TARGET_STANDARD_CONCEPT
FROM CONCEPT C
JOIN CONCEPT_RELATIONSHIP CR ON C.CONCEPT_ID = CR.CONCEPT_ID_1 AND CR.invalid_reason IS NULL
AND cr.relationship_id = 'Maps to'
JOIN CONCEPT C1 ON CR.CONCEPT_ID_2 = C1.CONCEPT_ID AND C1.INVALID_REASON IS NULL
UNION
SELECT source_code, SOURCE_CONCEPT_ID, SOURCE_CODE_DESCRIPTION, source_vocabulary_id, c1.domain_id
AS SOURCE_DOMAIN_ID, c2.CONCEPT_CLASS_ID AS SOURCE_CONCEPT_CLASS_ID, c1.VALID_START_DATE AS
SOURCE_VALID_START_DATE, c1.VALID_END_DATE AS SOURCE_VALID_END_DATE, stcm.INVALID_REASON AS
SOURCE_INVALID_REASON,target_concept_id, c2.CONCEPT_NAME AS TARGET_CONCEPT_NAME,
target_vocabulary_id, c2.domain_id AS TARGET_DOMAIN_ID, c2.concept_class_id AS TARGET_CONCEPT_CLASS_ID,
c2.INVALID_REASON AS TARGET_INVALID_REASON, c2.standard_concept AS TARGET_STANDARD_CONCEPT
FROM source_to_concept_map stcm
LEFT OUTER JOIN CONCEPT c1 ON c1.concept_id = stcm.source_concept_id
LEFT OUTER JOIN CONCEPT c2 ON c2.CONCEPT_ID = stcm.target_concept_id
WHERE stcm.INVALID_REASON IS NULL
)
SELECT *
FROM CTE_VOCAB_MAP
/*EXAMPLE FILTERS*/
WHERE SOURCE_VOCABULARY_ID IN ('NDC')
AND TARGET_STANDARD_CONCEPT IN ('S')
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